This error message can be hardware or software related and can result in a boot loop or the router getting stuck in ROM Monitor (ROMmon) mode.
To resolve this issue, perform these steps:
This issue can be caused by a software image with a bad checksum. If the router experiences the TLB (Store)Exception error message immediately after a Cisco IOS® Software upgrade, this is likely to be the issue.
Erase the Flash and re-download the Cisco IOS Software image or boot from another software image.